1 Gwernllwyn, Penrhiwllan, Llandysul, SA44 5NT

1 Gwernllwyn is a detached house in Penrhiwllan, Llandysul, Llandysul (SA44 5NT). It has a recorded floor area of 154 m² (around 1658 sq ft), construction records dating it to 1950-1966 and council tax band C. The latest certificate (November 2016) shows an F (score 22), near the bottom of the EPC scale. The rating has held steady at F across 3 certificates since June 2016. Between certificates, main heating went from Very Poor to Poor; while wall efficiency dropped from Good to Poor and roof efficiency dropped from Good to Average. The recommended improvements would lift it to D (score 65), a 2-band jump. Main heating runs on lpg.

Held since December 2007 — that's 18 years off the open market, well above the local norm. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. At 154 m² the property is well over the postcode median (117 m² across 4 EPCs), placing it in the larger end of the local stock. It lags the bulk of the postcode on energy efficiency (less efficient than 75% of similar EPCs). Today's modelled estimate of £234,000 sits 158.1% above the 2007 sale of £90,650. On a £-per-square-foot basis, the last sale (£55/sq ft) was about 63% above the typical sold price in the postcode.